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    • 46. 发明申请
    • OPTICALLY ACTIVE AMINE DERIVATIVE AND METHOD OF SYNTHESIS
    • 光活性胺衍生物和合成方法
    • WO02038532A1
    • 2002-05-16
    • PCT/JP2001/009830
    • 2001-11-09
    • C07C213/02C07C213/08C07C215/30C07C271/18C07D263/04C07D263/06C07C215/46C07C269/06C07C271/16C07M7/00
    • C07D263/04C07B2200/07C07C213/02C07C213/08C07C271/18C07D263/06C07C215/30
    • A natural type alpha -amino acid which is easily available and inexpensive is converted to a compound represented by the formula (1), which is reacted with an organometallic reagent represented by the formula (2) to obtain an optically active 5-hydroxyoxazolidine derivative represented by the formula (3). The derivative (3) is treated with an acid to obtain an optically active amino ketone derivative represented by the formula (4), which is subjected to reduction, etc. to obtain an optically active amino alcohol derivative represented by the formula (5) or (6). General formula (2) General formula (1) General formula (3) General formula (4) General formula (5) or General formula (6) Thus, the optically active amino alcohol derivative represented by the formula (5) or (6) having a satisfactory optical purity, which is useful as an intermediate for medicines, agricultural chemicals, etc., can be stereoselectively produced stably at low cost from a natural type alpha -amino acid as an easily available, inexpensive starting material without causing racemization. Also provided are: the optically active 5-hydroxyoxazolidine derivative represented by the formula (3) and the amino ketone derivative represented by the formula (4), which are important intermediates for this production; and processes for producing these.
    • 易于获得和便宜的天然α-阿氨酸被转化为式(1)表示的化合物,其与式(2)表示的有机金属试剂反应得到表示为光学活性的5-羟基恶唑烷衍生物 通过式(3)。 用酸处理衍生物(3),得到式(4)表示的光学活性氨基酮衍生物,进行还原等,得到式(5)表示的光学活性氨基醇衍生物或式 (6)。 通式(2)通式(1)通式(3)通式(4)通式(5)或通式(6)因此,式(5)或(6)表示的光学活性氨基醇衍生物 具有令人满意的光学纯度,其可用作药物,农药等的中间体,可以以低成本从天然α-氨基酸稳定地立体选择性地制备,作为容易获得,廉价的原料而不引起外消旋化。 还提供:由式(3)表示的光学活性的5-羟基恶唑烷衍生物和由式(4)表示的氨基酮衍生物,它们是该生产的重要中间体; 以及制造这些的方法。